Robust system with high-pressure stainless steel Helix VE series centrifugal pump with integrated frequency converter with an extremely wide control range from 25 Hz to 60 Hz
High energy efficiency thanks to improved pressure-loss hydraulics and optimal regulation of performance by varying the pressure (p-v) and synchronous speed regulation in parallel
High reliability through integrated safety functions such as overload and dry run protection with automatic shut-off and leak detection and monitoring via optional SCADA interface
Maximum control quality through SCe control unit with LCD display, easy navigation and rotary knob control
Optional connection to a building automation system via Modbus RTU serial protocol
All parts in contact with pumped liquid are suitable for contact with drinking water

Type

High-efficiency, ready-to-connect water supply unit with 2 to 4 vertically arranged vertically arranged normally aspirated stainless steel high-pressure multistage centrifugal pumps of the Helix VE series, each with integrated air-cooled frequency converter. The system is equipped with the Smart Controller SCe.

Application

• Automatic water supply systems in supply mode, in public water supply, for pressure boosting from reservoirs or pressure pipes, for municipal, industrial and private applications (e.g. waterworks, commercial and industrial plants, residential, office, public, administration buildings, hotels, hospitals).
• According to DIN 1988 and DIN EN 806 a back-up pump is included
• Approved pumped liquids are generally waters, which have no aggressive chemical and mechanical effects on the materials used and do not contain abrasive and long-fibre constituents, such as
• Drinking water (see Materials section for drinking water tolerance)
• Cooling water
• Process water
• Extinguishing water (except fire extinguishing water in accordance with DIN 14462; with the approval of the local fire department)

Equipment/function

Each installation has 2 to 4 pumps of the Helix VE 2 to Helix VE 52 series with a standard motor equivalent to IE4 and speed control via a built-in frequency converter on each pump.

The SCe control unit provides automatic regulation and control of the pressure boosting unit.

Fully assembled on a height adjustable galvanized steel base frame.

All parts in contact with the pumped liquid are corrosion resistant.

• On the pressure side:
  • Shut-off valves.
  • Non return valve
  • Non return valve at each pump
  • Expansion vessel 8 l diaphragm tank, PN 16
  • Pressure sensor 4...20 mA
  • Pressure gauge
• On suction side:
  • Shut-off valve
  • Pressure sensor 4...20 mA
  • Pressure gauge
  • Pressure gauge: Pressure gauge on suction side
  • Pressure boosting system factory-fitted, tested for fault-free operation and leaktightness, ready for connection
  • Packaging
  • Installation and operating instructions

Explanation of the name

Technical Specifications

• Mains connections:
  • 3~400 V ±10%, 50 Hz
  • 3~380 V ±10%, 60 Hz
• Max. temperature of pumped liquid +60 °C (optional +70 °C)
• Max. ambient temperature 40 °C
• Working pressure 16 bar (optional 25 bar)
• Inlet pressure 10 bar
• Nominal diameters for connections:
  • End pressure side R 1½" - DN 200
  • Supply side R 1½" - DN 200
• Speed range 1500 - 3500 rpm
• Protection class IP 54
• A, AC 3 fuses on the motor side according to the motor power rating and the regulations of the power supply company

Materials

• Helix VE 6": 2 - 16 m³/h
  • Stainless steel pump casing 1.4301 [AISI 304]
  • Hydraulics in stainless steel 1.4307 [AISI 304L]
  • EPDM seal
  • without cartridge, except pumps with electric motor over 7,5 kW
• Helix VE 8": 22 - 52 m³/h
  • EN-GJL-250, cataphoresis coated grey cast iron pump casing with ACS/WRAS approval
  • Hydraulics in stainless steel 1.4307 [AISI 304L]
  • EPDM seals
  • without cartridge, except pumps with electric motor over 15 kW
  • ES version: Stainless steel construction
    • Pump casing made of stainless steel 1.4301 [AISI 304].
    • Stainless steel 1.4307 [AISI 304L] hydraulic section
• Other pump models available on request:
  • with or without cartridges
  • PN 25
  • Seal in FKM (Viton)
  • Pump casing in stainless steel and hydraulic part in 1.4404 [AISI 316L]